This was 9.4 percent lower than the state average of 34.4 percent. In 2020 the total municipality population reached 388.
84.6 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Tenkiller for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 40 | 15.4 |
| Regular high school diploma | 92 | 35.4 |
| GED or alternative credential | 12 | 4.6 |
| Some college, less than 1 year | 9 | 3.5 |
| Some college, 1 or more years, no degree | 42 | 16.2 |
| Associate's degree | 3 | 1.2 |
| Bachelor's degree | 52 | 20 |
| Master's degree | 10 | 3.8 |
| Professional school degree | 0 | 0 |
| Doctorate degree | 0 | 0 |
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